Preservice mathematics teachers seem to need professional support regardingthe use of educational technologies to teach geometry topics. Particularly, ourprevious study showed that when it comes to their techno-pedagogical contentknowledge (TPACK), they self-report to need guidance to teach with technology.The purpose of this study was to develop a 14-week course to increase theirTPACK in hopes of bridging the knowledge gap identified in earlier studies. Thispaper summarized the course content with a humble expectation to get valuablefeedback from an international audience. The developed course includedlessons on components of TPACK, which were found to require improvement tobest meet future students’ needs in teaching geometry with technology. Wehope that preservice teachers’ TPACK levels will be improved after the course.